package oocis.util;

public abstract class UserEnvironment {
	public UserEnvironment(UserEnvironment ue) {
		// undo
	}

	public boolean contain(User u) {
		// undo
		return true;
	}

	public void remove(User u) {
		// undo
	}

	public void add(User u) {
		// undo
	}

	public boolean empty() {
		// undo
		return false;
	}

	public void clear() {
		// undo
	}

	public void combine(UserEnvironment ue) {
		// undo
	}
}
